Ingredients

• 2½ cups all-purpose flour ((300g))
• 1½ teaspoons baking powder
• ½ teaspoon baking soda
• ¾ teaspoon salt
• 1 cup unsalted butter (softened (227g))
• 1½ cups granulated sugar ((300g))
• 2 tablespoon lemon zest ((about 2 lemons))
• 3 large eggs (room temperature)
• 1 cup low-fat buttermilk (room temperature (240ml))
• ¼ cup fresh lemon juice ((about 2 lemons) (60ml))
• 1 tablespoon vanilla extract
• 1 cup unsalted butter (room temperature (227g))
• 8 ounce cream cheese (room temperature (226g))
• 1 tablespoon lemon zest ((about 1 lemon))
• 7 cup powdered sugar ((840g))
• 2 tablespoon lemon juice ((about 1 lemon))
• ½ teaspoon vanilla extract